SANDWICHED IN: Meet Andrew Kessler, author of Martian Summer: Behind the Scenes of Mars Mission Control (Pegasus Books, 2012). In the summer of 2008, Kessler spent three months living and working in mission control of the Mars Phoenix expedition, along with 130 top NASA scientists and engineers, becoming the first outsider ever granted unfettered access to such an event. Books will be available for purchase and signing. Sponsored by the Friends of the Library. 12:10 p.m.